From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Performance comparison table for vehicles B-23-AE and 3-B-IV, testing different pipe and carburetor configurations.
| Identifier | ExFiles\Box 85\4\ scan0090 | |
| Date | 24th October 1934 guessed | |
| B-23-AE Old Pipe | New Pipe Std. Carb. 10 - 30 M.P.H. | 9.6 secs. | 8.5 secs. 10 - 40 " | 14.1 " | 13.0 " 10 - 50 " | 18.15 " | 17.4 " 10 - 60 " | 24.67 " | 23.25 " Pistern Hill | 65.8 secs. | 60.5 secs. Min. Speed. | 27 MPH. | 29 MPH. Stanton Hill | 25.8 secs. | 25.0 secs. 3-B-IV. Old Pipe | New Pipe Std. Carbs. 8.85 secs. | 8.4 secs. 13.5 " | 12.7 " 18.3 " | 17.67 " 24.25 " | 23.6 " 66.5 secs. | 59.0 secs. 26 MPH. | 30 MPH. 26.3 secs. | 24.6 secs. B-23-AE. New Pipe Small Carbs. 8.75 secs. 13.72 " 18.67 " 24.33 " 64.5 secs. 27 MPH. 25.7 secs. B-23-AE is fitted with 11 x 41 axle. Comp. Ratio 7.0 : 1 3-B-IV " " " 10 x 41 " " " 6.51 : 1 Hs{Lord Ernest Hives - Chair}/F.Dodd. | ||